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Thread: Ajax & Php

  1. #1
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    Default Ajax & Php

    I've tried to use the ajax script on provided here to request a page, it works well when using pure HTML e.g <a href="javascript:ajaxpage('anything.htm', 'anydiv');">anything</a>, but when i try to use it in PHP within a session i keep getting syntax error e.g of code. $message .= <a href=\"javascript:ajaxpage('anything.htm', 'anydiv');\">anything</a>";

    I've tried everything can anyone help?

    Also can anyone give me an example of how I can use XML with AJAX as I know XML much better that javascript.

    Eamon

  2. #2
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    Default

    explain what you are trying to do.

    You can use AJAX to post variables to a page, or get variables from a page.


    For example, if you wanted to use AJAX to get the profile of user ID $id which is defined on the main page.

    You would make a page called AJAX.php which would get a users profile by the $_GET variable $id.

    So then you can make it go echo("getajaxpage(ajax.php?id=$id)");

  3. #3
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    Default

    I'm trying to load data from either a switch in the page or and external file into the div.

    e.g
    I have lots of functions that changes the divs to save the session state at present so i don't want the page to be refreshing for everything so i need ajax to do what it does best.

    here is an example.

    <? $message = "";
    $message .= "<div class=placeholder>\n";
    $message .= "<div class=links>\n";
    $message .= "<a class=shiftleft href=\"javascript:ajaxpage('?page=myaccount', 'content');\">My account</a><br>\n";
    $message .= "</div>\n";
    $message .= "<div id=content>\n";
    $message .= "</div>\n";
    $message .= "</div>";
    ?>

    here's a ajax script i fond on this site
    var bustcachevar=1 //bust potential caching of external pages after initial request? (1=yes, 0=no)
    var loadedobjects=""
    var rootdomain="http://"+window.location.hostname
    var bustcacheparameter=""

    function ajaxpage(url, containerid){
    var page_request = false
    if (window.XMLHttpRequest) // if Mozilla, Safari etc
    page_request = new XMLHttpRequest()
    else if (window.ActiveXObject){ // if IE
    try {
    page_request = new ActiveXObject("Msxml2.XMLHTTP")
    }
    catch (e){
    try{
    page_request = new ActiveXObject("Microsoft.XMLHTTP")
    }
    catch (e){}
    }
    }
    else
    return false
    page_request.onreadystatechange=function(){
    loadpage(page_request, containerid)
    }
    if (bustcachevar) //if bust caching of external page
    bustcacheparameter=(url.indexOf("?")!=-1)? "&"+new Date().getTime() : "?"+new Date().getTime()
    page_request.open('GET', url+bustcacheparameter, true)
    page_request.send(null)
    }

    function loadpage(page_request, containerid){
    if (page_request.readyState == 4 && (page_request.status==200 || window.location.href.indexOf("http")==-1))
    document.getElementById(containerid).innerHTML=page_request.responseText
    }

    function loadobjs(){
    if (!document.getElementById)
    return
    for (i=0; i<arguments.length; i++){
    var file=arguments[i]
    var fileref=""
    if (loadedobjects.indexOf(file)==-1){ //Check to see if this object has not already been added to page before proceeding
    if (file.indexOf(".js")!=-1){ //If object is a js file
    fileref=document.createElement('script')
    fileref.setAttribute("type","text/javascript");
    fileref.setAttribute("src", file);
    }
    else if (file.indexOf(".css")!=-1){ //If object is a css file
    fileref=document.createElement("link")
    fileref.setAttribute("rel", "stylesheet");
    fileref.setAttribute("type", "text/css");
    fileref.setAttribute("href", file);
    }
    }
    if (fileref!=""){
    document.getElementsByTagName("head").item(0).appendChild(fileref)
    loadedobjects+=file+" " //Remember this object as being already added to page
    }
    }
    }

    thanx

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